miniDOT® Clear Logger

The miniDOT® Clear Logger is a fully submersible logger that records dissolved oxygen and temperature measurements in fresh and saltwater environments. The logger features an internal LCD screen, which displays real-time measurements. The oxygen sensor is an optode that measures dissolved oxygen concentration in water through a fluorescence method. Data is recorded to an internal SD card. 

Product Features

Plug & Play Software

Software is provided with every miniDOT® Clear Logger and can be found on the micro SD card once connected to a computer. The software displays the miniDOT® Clear Logger files and creates visual plots to easily read oxygen measurements. The software also allows the user to set the internal clock and determine a sample rate.

Sensor Specifications & Calibration

The oxygen sensor is able to compute oxygen concentration in mg/L and record these measurements internally. Every miniDOT® Clear Logger is calibrated at PME headquarters. Our unique method of calibrating oxygen sensors allow stability over years before recalibration is necessary. The miniDOT® Clear Logger can sample in intervals between once every minute and once every hour.

Field Replaceable Batteries

The miniDOT® Clear Logger, uses two AA lithium batteries, and are user replaceable. The miniDOT® Clear Logger also contains a backup coin-cell battery.

Logger Information & Sensor Specifications

The miniDOT sensor is an optode that measures lifetime-based luminescence quenching of a thin membrane. The sensing foil contains a coating that has a variable fluorescence that depends upon oxygen concentration in the surrounding water. The sensor can compute oxygen concentration in mg/L and record these measurements internally. Every miniDOT® Clear logger is calibrated at PME headquarters. Our unique method of calibrating oxygen sensors allows stability over years before recalibration is necessary. The miniDOT® Clear logger can sample between once every minute to once every hour.